Improved Surface Currents from Altimeter-Derived and Sea Surface Temperature Observations: Application to the North Atlantic Ocean

We present a study on the ocean surface currents reconstruction by merging Level-4 (L4, gap-free) altimeter-derived geostrophic currents and satellite sea surface temperature. Building upon past studies on the multi-variate reconstruction of geostrophic currents from satellite observations, we regio...

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Bibliographic Details
Published in:Remote Sensing
Main Authors: Daniele Ciani, Sarah Asdar, Bruno Buongiorno Nardelli
Format: Article in Journal/Newspaper
Language:English
Published: MDPI AG 2024
Subjects:
geostrophic currents
sea surface temperature
satellite observations synergy
Science
Q
North Atlantic
Online Access:https://doi.org/10.3390/rs16040640
https://doaj.org/article/7bac4602eabd480d97efdaae29d785e7
Description
Summary:We present a study on the ocean surface currents reconstruction by merging Level-4 (L4, gap-free) altimeter-derived geostrophic currents and satellite sea surface temperature. Building upon past studies on the multi-variate reconstruction of geostrophic currents from satellite observations, we regionalized and optimized an algorithm to improve the altimeter-derived surface circulation estimates in the North Atlantic Ocean. A ten-year-long time series (2010–2019) is presented and validated by means of in situ observations. The newly optimized algorithm allowed us to improve the currents estimate along the main axis of the Gulf Stream and in correspondence of well-known upwelling areas in the North Eastern Atlantic, with percentage improvements of around 15% compared to standard operational altimetry products.

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